Digital Commons Network^™

Formation Control Of Multi-Agent Systems By Using Rigid Graphs, Pengpeng Zhang

LSU Doctoral Dissertations

This research is devoted to the decentralized formation control of multi-agent systems in two- and three-dimensional space. Rigid graph theory is used to describe the interactions between the agents, and Lyapunov theory and input-to-state stability are the main tools for designing and analyzing the stability of the proposed formation controllers. Two formation problems are addressed in this work: formation acquisition, where the goal is for the agents to form and maintain a pre-defined geometric shape; and formation maneuvering, where the agents need to acquire a formation and move cohesively as a virtual rigid body.

In the first problem, we tackle …

On The Computation Of The Rate-Equivocation Region For Wyner's Wire-Tap Channels, Meena Gangula

LSU Doctoral Dissertations

In a wire tap channel, the transmitter Alice communicates with the legitimate receiver, Bob, in the presence of another receiver, Eve. The goal is to keep the wiretapper, Eve, as ignorant as possible about the information sent to Bob. For communication channels where the adversary, Eve, eavesdrops on the information sent between the legitimate users by wiretapping at the Bob's end, Wyner introduced secure encoding schemes and showed that non zero reliable transmission rate is possible in perfect secrecy. Wyner also obtained the information theoretic achievable rate equivocation region (Rb, DeltaK) for discrete memoryless wire tap channels. The rate equivocation …

Brewed Awakening: Re-Imagining Education In Three Nineteenth-Century New Orleans Coffee Houses, Robyn Rene Andermann

LSU Doctoral Dissertations

In dominant narratives of the history of education in America, the icon of the American educated citizen has traditionally been rooted in Jeffersonian Democracy, eventually taking shape in the Northern, Anglo-Protestant, Common School Movement in which the availability and acceptance of state-supported public education was a key measure of democratic progress. Within the institution of common schools, individuals were taught how to participate in a democratic society.

This dissertation reimagines the dominant narrative by suggesting that the multiethnic and multilingual nature of New Orleans, which some early American leaders had framed as discordant and disorderly, was vital to constructing an …

Editors’ Introduction: On The Promise And Possibilities Of Arts Integration In Education, Margaret Mary Sulentic Dowell, Christian Z. Goering

Faculty Publications

No abstract provided.

The Relationship Between Maternal Distress And Adjustment Problems In Adolescents With Attention-Deficit/Hyperactivity Disorder: An Examination Of Family Routines And Communication As Moderators, Ryan Nicole Cummins

LSU Master's Theses

Attention-Deficit/Hyperactivity Disorder (ADHD) is a common disorder in youth. The presence of comorbid internalizing and externalizing symptoms is a frequent occurrence in ADHD youth; comorbid symptoms are associated with poor adjustment into adolescence and negative trajectories into adulthood. There are many contributing factors in the development of comorbid symptoms (e.g., parental distress and family environment). Thus, it is important to understand the relationship between contributing factors and the ways in which family consistency helps to manage problem behaviors in adolescents with ADHD. One way to increase consistency is through the use of routines and positive communication. The present study examined …

Effects Of Enhanced Efficiency Nitrogen Fertilizers On Agronomic Parameters And Loss Pathways In The Subtropical Mississippi Delta Region, Scott Michael Pensky

LSU Master's Theses

Minimizing nitrogen (N) loss is critical for improving N use efficiency (NUE) in crop production and reducing its effects on the environment. Management practices such as seasonal application timing of N fertilizers and the addition of enhanced efficiency N fertilizers (EENFs) were investigated for the high N requirement of the two most common cereal crops globally, corn (Zea mays L.) and wheat (Triticum aestivum L.), in the subtropical climate of Louisiana. Field research was established during the 2016 and 2017 seasons at the LSU Agricultural Center’s Dean Lee and Central research stations to examine the effect of different EENFs and …

Una Soldado En Cada Hija: An Analysis Of Women's Illicit Participation In The Mexican Revolution, Edrea Maria Mendoza Quintero

LSU Master's Theses

Women’s contributions during the violent phase of the Mexican Revolution (1910-1917) have historically been kept in the shadows. When stories of their heroism were finally brought to light, what emerged was a new brand of heroine: the soldadera. She was either a loyal camp follower or a brave soldier. These women’s stories are remarkable, but the contributions of other women were often overlooked because they did not fit the soldadera mold. Some of those women were journalists and activists, others were nurses. As time has passed, these other women have also received their due credit for their involvement in the …

Relating Diets And Food Availability To Long-Term Population Trends Of Lesser Scaup Wintering On Lake Pontchartrain, Louisiana, Clay Michael Stroud

LSU Master's Theses

Lake Pontchartrain provides wintering habitat for a continentally-significant proportion of lesser scaup (Aythya affinis). Mid-winter aerial surveys indicate dramatic variation in annual scaup abundance (0–1,194,907), though the mechanisms driving fluctuations have not been previously investigated. In response to natural and anthropogenic disturbances, species composition, abundance, and size structure of benthic invertebrate populations in Lake Pontchartrain exhibit drastic variability among years. Given that wintering scaup feed primarily on mollusks, environmental disturbances have the potential to influence scaup dynamics on the estuary by altering the benthic community. To diagnose trophic linkages and variation in scaup abundance, we collected ducks (n=60) …

Preservation And Reformation, Yedi Zhang

LSU Master's Theses

ABSTRACT Taking the conservation and development of the Old Town of Luoyang as an example, this thesis explores the issue of largescale renovation and reconstruction of old city in the background of urbanization, and attempts to seek the balance between old town preservation and local residents’ life quality enhancement. It is needing to be aware that, as a result of the layering and intertwining of cultural and natural values over time, the urban historical heritage includes both tangible and intangible components. To protect historical heritage in the city, we should not only just imitate the history scenes, more importantly, it …

La Elisión De La /-S/ En El Español Del Caribe Y Los Estados Unidos, Andreina Isabel Colina

LSU Master's Theses

This sociolinguistic study explores the articulation of /-s/ in syllable-final position in the speech of Venezuelans that reside in Southern Louisiana and residents from Cartagena, Colombia. The results show similarities between both Caribbean communities, such as not favoring retention, and elements that differentiate the communities based on their geolects. One of the most significant differences is that speakers from Cartagena promote elision while Venezuelans that reside in Louisiana promote aspiration. Furthermore, the results show a connection between the time of residence of Venezuelans in Louisiana and retention. There is a great variety of studies about elided consonantal articulation of Caribbean …

Effects Of Dimethyl Sulfoxide And Glycerol Based Vitrification Protocols On Zona Pellucida Hardening In Mature Bovine Oocytes, Kaci Denise Rogers

LSU Master's Theses

Zona pellucida hardening is a natural process that occurs after oocyte fertilization to prevent polyspermic fertilization and to protect embryonic development. Pre-fertilization hardening of the zona pellucida however, decreases fertilization rates. Cryoprotectants have also been shown to negatively affect fertilization rates, one possible mechanism of which being through zona hardening. This experiment was conducted to determine the effect of different cryoprotectants on hardening of the zona pellucida using fresh mature bovine oocytes and vitrified mature bovine oocytes. Oocytes were post-slaughter from mixed breed cows. After collection, oocytes were randomly assigned to three cryoprotectant treatment groups: dimethyl sulfoxide (DMSO), glycerol or …

Is Social Anxiety Related To An Attentional Bias To Suicide?, Austin Warner Lemke

LSU Master's Theses

Suicide is the cause of death of over 800,000 people worldwide each year and is one of the leading causes of death in the U.S. Individuals with elevated social anxiety appear to be at a particularly high risk for suicide. Attentional bias is a maintaining factor in a broad range of psychological conditions including social anxiety, and an attentional bias toward suicide-related cues is related to both past and future suicide attempts. However, little research has been done on attentional biases toward suicide-related cues, and no known research has examined whether individuals with elevated social anxiety have a bias toward …

Designing Peace In Hiroshima, Inmi Moon

LSU Master's Theses

The world’s first atomic bomb was dropped on the city of Hiroshima on 6th August 1945, and after such a rare historical moment the place was enormously burnt and ruined. After 70 years of continuous reconstruction, it is a city full of green colors.

The target site of this thesis is located in central Hiroshima. It was previously a baseball field, and it was the symbol of rehabilitation for residents in Hiroshima city. In 1950, the local government decided to establish a Hiroshima-based baseball team as a part of the reconstruction process from the devastation of the atomic bomb. The …

Multitarget Joint Delay And Doppler Shift Estimation In Bistatic Passive Radar, Mohammed Rashid

LSU Master's Theses

Bistatic passive radar (BPR) system does not transmit any electromagnetic signal unlike the active radar, but employs an existing Illuminator of opportunity (IO) in the environment, for instance, a broadcast station, to detect and track the targets of interest. Therefore, a BPR system is comprised of two channels. One is the reference channel that collects only the IO signal, and the other is the surveillance channel which is used to capture the targets' reflected signals. When the IO signal reflected from multiple targets is captured in the surveillance channel (SC) then estimating the delays and Doppler shifts of all the …

Evaluation Of Controlled-Release Nitrogen And Potassium Fertilizer In Louisiana Sugarcane Production, Samuel Kwakye

LSU Master's Theses

Sugarcane (Saccharum spp) production is an integral part of Louisiana's economy. Proper fertilizer management, particularly nitrogen (N) and potassium (K), optimizes sugarcane production. An experiment was established in 2015 at the LSU AgCenter Sugar Research Station in St. Gabriel, Louisiana to: (1) assess the effect of N and K fertilizer sources on sugarcane yield and quality parameters, and (2) monitor the changes in inorganic N and K levels in the soil at different sugarcane growth stages. The experiment was arranged in a randomized complete block design on a Sharkey clay soil and complete randomized design on a Commerce …

Over-Height Vehicle Impact Reduction On Bridges: A Case Study, Marc Alexander Hoffmann

LSU Master's Theses

Over-height vehicle collisions are a growing concern as commercial vehicles, as well as their cargo, become taller. Engineers recognize the dangers of over-weight vehicles traveling on our bridges and are able to adequately predict the behavior of a bridge subjected to increased live loads. However, bridges are becoming more vulnerable to collisions from over-height vehicles. Not only are the time and place of over-height vehicle collisions difficult to predict, but also the exact response of the bridge subjected to the lateral impact force is difficult to predict.

Most states use early warning detection systems to alert over-height vehicles and/or crash …

Integrating Horticulture Therapy In A Juvenile Detention Center Using Raised Bed Gardening And Exploratory Substrate Research, Stephanie Rene Gravois

LSU Master's Theses

Bagged media products are readily available at garden retails. However, most need to be amended or have supplemental topsoil combined for use in raised beds. Three media mixes were evaluated for the growth and yields of lettuce, broccoli and cauliflower. Two tested media were commercially available purchased products and the third was developed at Louisiana State University Agriculture Center (LSU AgCenter) specially designed for raised bed vegetable production. The LSU AgCenter medium produced greater yield and plant growth in all three crops (p ≤ 0.05) as compared to the commercially available media. The commercial products without additional amendments were found …

Implementation Planning Adapted For Group-Based Training Of Proactive Classroom Management Strategies, James Jaran Upright

LSU Master's Theses

Proactive classroom management (PCM) strategies are preventative teacher practices implemented prior to the onset of problem behavior. PCM strategies have been widely demonstrated to be effective in preventing and reducing disruptive behavior while promoting academic engagement in the classroom. In practice, however, the use of proactive strategies is far less common than reactive strategies for managing student behavior. Although teachers are concerned about classroom management, many report a lack of training or support needed to successfully implement behavior management strategies. One promising approach for supporting teachers’ use of behavior management strategies is implementation planning. Implementation planning is an implementation support …

Breaking Conventions: Ohrr, A Transcriptional Regulator From Burkholderia Thailandensis, Anuja Rajiv Pande

LSU Doctoral Dissertations

Organic peroxides (OPs) are highly toxic oxidants. They directly react with cellular macromolecules rendering them inactive. Soil bacteria live in an oxidative environment rich in OPs from plant exudates and other xenobiotic compounds. Bacteria also face a burst of organic peroxides (lipid peroxides) in the macrophages during host invasion. Prokaryotes sense oxidative changes in environment and modulate their gene expression as an adaptive response for survival. MarR (multiple antibiotic resistance regulators) proteins enable bacteria to respond to such stress. Resistance to organic oxidants has been hypothesized to help bacteria survive in presence of disinfectants. This increases nosocomial infection rate.

Bacteria …

Jews And The Sources Of Religious Freedom In Early Pennsylvania, Jonathon Derek Awtrey

LSU Doctoral Dissertations

Historians’ traditional narrative regarding religious freedom in the colonial period and early republic focuses on Protestants and sometimes Catholics to the exclusion of other religious groups; the literature also emphasizes the legal dimensions of freedom at the expense of its cultural manifestations. This study, conversely, demonstrates that Jews, the only white non-Christian minority group in early Pennsylvania, experienced freedom far differently than its legality can adequately explain. Jews, moreover, reshaped religious freedom to include religious groups beyond Protestant Christians alone. But such grassroots transformations were neither quick nor easy. Like most of the Anglo-American world, William Penn’s “Holy Experiment” excluded …

Linguistic Political Ecology With The Ngäbe Indigenous People Of Panama, Ginés A. Sánchez Arias

LSU Doctoral Dissertations

Indigenous communities from all corners of the globe live in uncertain times. From the vantage point of their “remote" lands, they undergo some of globalization’s most harmful externalities. Their homes become increasingly harder to maintain as extractive industries, development schemes, clandestine land grabs, and national bureaucracies encroach creating new colonial lands. First by assimilation, and then integration, these processes systematically undermine indigenous culture and autonomy. In place of such destructive coloniality, indigenous societies shelter unique ecological and linguistic knowledge that continues to serve their progress. This research applies lessons learned from studying with Ngäbe communities of western Panama, towards a …

Essays On Ipo Lockups, Wentao Wu

LSU Doctoral Dissertations

The dissertation includes two chapters. The title of the first chapter is “How Divergence of Opinions Matters: Evidence from Lockup Effects in VC-backed IPOs”. The title of the second chapter is “Short-selling Around IPO Lockup Expiration”.

The first chapter discusses how divergence of investor opinions plays a role in explaining IPO lockup effects in venture capital backed (VC-backed) IPOs. It is well established that IPO lockup expiration is associated with negative cumulative abnormal returns (CARs). While a number of studies have examined these lockup effects, they offer very limited explanations to the phenomenon. Miller (1977) suggests that divergence of investor …

An Annotated Bibliography Of Percussion Works By Stanley Leonard, Kyle Douglas Cherwinski

LSU Doctoral Dissertations

Timpanist, pedagogue, and composer Stanley Leonard has written over one hundred and twenty pieces for percussion, including solos, ensemble pieces, and method books. Several musical techniques are represented in his body of work, including traditional harmony, twelve-tone technique, graphic notation, and improvisation. The purpose of this document is to catalog all of these items into one source as a reference for other percussionists.

The document begins with biographical information, including his impressive performing career, his years as an educator, and the circumstances that led to his composition career. This required interviewing Leonard as well as reading several of the articles …

Blue And Black Cloth Targets: Effects Of Size, Shape, And Color On Stable Fly (Diptera: Muscidae) Attraction, Jerome A. Hogsette, Lane D. Foil

Faculty Publications

© 2018 Oxford University Press. All rights reserved. Stable fly management is challenging because of the fly's dispersal behavior and its tendency to remain on the host only while feeding. Optically attractive traps have been used to survey and sometimes reduce adult populations. Insecticide-treated blue and black cloth targets developed for tsetse fly management in Africa were found to be attractive to stable flies in the United States, and various evaluations were conducted in Louisiana and Florida. Tests using untreated targets were designed to answer questions about configuration, size, and color relative to efficacy and stability in high winds. Studies …

Characterization Of Resistance To Cephus Cinctus (Hymenoptera: Cephidae) In Barley Germplasm, Andrea C. Varella, Luther E. Talbert, Buddhi B. Achhami, Nancy K. Blake, Megan L. Hofland, Jamie D. Sherman, Peggy F. Lamb, Gadi V.P. Reddy, David K. Weaver

Faculty Publications

Most barley cultivars have some degree of resistance to the wheat stem sawfly (WSS), Cephus cinctus Norton (Hymenoptera: Cephidae). Damage caused by WSS is currently observed in fields of barley grown in the Northern Great Plains, but the impact of WSS damage among cultivars due to genetic differences within the barley germplasm is not known. Specifically, little is known about the mechanisms underlying WSS resistance in barley. We characterized WSS resistance in a subset of the spring barley CAP (Coordinated Agricultural Project) germplasm panel containing 193 current and historically important breeding lines from six North American breeding programs. Panel lines …

An Index For Measuring Community Resilience To Flooding In Baton Rouge, Louisiana, Yi Ling Chan

LSU Master's Theses

The greater Baton Rouge area in Louisiana has been impacted by repeated floods throughout its history. The most recent flood in August 2016 resulted in damages to over 80,000 homes and businesses and upwards of $430 million in public assistance granted by the Federal Emergency Management Agency. East Baton Rouge Parish and neighboring Livingston and Ascension parishes are expected to face compounded pressures and risks with the threat of increasing frequency of flood events coupled with expanding populations due to continuing suburbanization and inland migration from those living on Louisiana's coast. The purpose of this research is to create and …

Impact Of Sorghum Cultivar, Phenology, Nitrogen, And Silicon Fertilization On Melanaphis Sacchari Biology, Luna Lama

LSU Master's Theses

The sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae), is an invasive pest of grain sorghum, Sorghum bicolor (L.) Moench. Since its first outbreak in sorghum in 2013, severe infestations have spread throughout the southern U.S. causing high economic losses. While insecticidal control has mitigated some of the impacts of this pest, a sustainable ecology-based management program is needed to reduce reliance on chemical control. We studied the effects of silicon (rates equivalent to 0 and 3360 kg Si/ha) and nitrogen (rates equivalent to 0, 110, and 220 kg N/ha) on M. sacchari growth and reproduction on resistant (DKS 37-07) and …

Inventing An Ethics: Existentialism And Engagement Through Literature, Michael Foster Wickham

LSU Master's Theses

The existentialist ethics of Jean-Paul Sartre and Simone De Beauvoir offers a unique perspective that challenges a traditional, normative picture that has been dominant throughout the history of ethical thinking and continues to dominate in contemporary discourse. The perspective in question refuses to rely on essence to ground its positions, opting instead to focus on the contingency of the subject and the interpersonal as being fundamental in the invention of moral values and ethical practices. This thesis looks to – in the first chapter – explore the relationship between the subjective and the interpersonal through a discussion of Heidegger’s Mitsein …

The Impact Of Mindfulness Practices On Classroom Climate And Perceived Teacher Stress, Erin Kathryn Hebert

LSU Master's Theses

BACKGROUND: Teaching has been identified as the most stressful profession in the human service industry (Greenberg, Brown, & Abenavoli, 2016). Elevated teacher stress can affect teacher well-being and burnout, as well as, classroom climate and student outcomes. OBJECTIVE: The purpose of this research study was to assess whether mindfulness practices can increase positive classroom climate and decrease perceived stress in early childhood teachers. METHOD: Participating teachers were selected based on results of the Perceived Stress Scale (PSS; Cohen, Kamarck, & Mermelstein, 1983). Data were collected on the positive and negative climate objectives from the Classroom Assessment Scoring System …

Articulatory Kinematics During Stop Closure In Speakers With Parkinson’S Disease, Austin Ross Thompson

LSU Master's Theses

Purpose: The goal of this exploratory study was (a) to investigate the differences in articulatory movements during the closure phase of bilabial stop consonants with respect to distance, displacement, and timing of motion between individuals with Parkinson’s Disease (PD) and healthy controls; and (b) to investigate changes in articulatory movements of speakers with PD when they voluntarily vary the degree of speech intelligibility.

Methods: Six participants, 4 PD and 2 healthy control (HC) speakers, participated in this study. The stimulus was a sentence containing several bilabial stop consonants (i.e., “Buy Bobby a puppy”). Movement data were collected using …